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Detailed Aquifer Mapping in Wayne County, New York, The Fairport-Lyons Channel Aquifer Introduction Detailed mapping of the glacial aquifer within the buried Fairport-Lyons bedrock channel in southern Wayne County, N.Y. is the latest study in the cooperative Detailed Aquifer Mapping Program between the U.S. Geological Survey (USGS) and the New York State Department of Environmental Conservation (NYSDEC). The aim of the program is to map the extent of glacial aquifers in New York State at a scale of 1:24,000. This information is used by NYSDEC Division of Water and others for delineation of groundwater contributing areas, assessing potential threats to aquifers from both point and non-point sources of pollution, responding to contamination from spills or leaks from underground storage facilities,... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Aquifer Mapping, Aquifer Mapping, Cooperative Water Program, Fairport-Lyons Channel Aquifer, All tags... GW or SW, GW or SW, GW or SW, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, New York, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, Wayne County, glacial, Fewer tags Detailed Aquifer Mapping in the Susquehanna River Valley in South-Central Broome County –Towns of Conklin and Kirkwood Introduction Detailed mapping of the valley-fill aquifer within the Susquehanna River valley and adjacent tributary valleys in south-central Broome County (Towns of Conklin and Kirkwood) is the latest study in the cooperative Detailed Aquifer Mapping Program between the US Geological Survey (USGS) and the New York State Department of Environmental Conservation (NYSDEC). The aim of the program is to map sand and gravel aquifers in New York State at a scale of 1:24,000. This information is used by NYSDEC Division of Water and others to delineate groundwater contributing areas, assess potential threats to aquifers from both point and non-point sources, respond to contamination from spills or leaks from underground... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Aquifer Mapping, Aquifer Mapping, Conklin, Cooperative Water Program, All tags... Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, Kirkwood, New York, South-Central Broome County, Susquehanna River Valley, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, glacial, Fewer tags Hydrogeology of the Virgil Creek Valley in the Town of Dryden, Tompkins County, New York Problem The Village of Dryden, rural homeowners, farms, and businesses in the Virgil Creek Valley tap several confined sand and gravel aquifers in the Virgil Creek valley in the town of Dryden . The valley contains a large moraine with complex stratigraphy consisting of continuous and discontinuous layers of till, lake deposits, and glaciofluvial sand and gravel. Sand and gravel units form the aquifers in the valley-fill deposits. There are at least three extensive confined aquifer units at various depths. However, little is known about (1) the location of recharge and discharge areas, (2) direction of groundwater flow, (3) extent of hydraulic connection between aquifer units, and (4) extent of surface- and ground-water... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Completed, Ecoflows, Ecoflows, Ecoflows, GW Model, All tags... GW Model, GW model, GW or SW, GW or SW, GW or SW, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrologic Networks and Analysis, New York, USGS New York Water Science Center, Virgil Creek Valley, Dryden, Tompkins County, WSC, Water Use and Availability Science, Water Use and Availability Science, hydrogeology, Fewer tags Onondaga Lake Watershed Geographic Information System Problem - The purpose of this project is to create a watershed GIS (Geographic Information System) to support the comprehensive cleanup and restoration of Onondaga Lake that is underway. A GIS is a computer system capable of capturing, storing, analyzing, and displaying geographically referenced information; that is, data identified according to location. Given the broad scope of the Onondaga Lake Partnership's (OLP) mission, a GIS is a powerful tool that can organize, store, and share information pertinent to the management of the natural resources of the Onondaga Lake watershed. The OLP GIS will be used for land use planning, resource management, scientific monitoring, and data presentation. The project has... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Basin & Hydrogeologic Characterization, Basin & Hydrogeologic Characterization, Basin & Hydrogeologic Characterization, Completed, Cooperative Water Program, All tags... GIS, Geospatial Applications, Geospatial Applications, New York, Onondaga County, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, Fewer tags New York Nowcast, Recreational Beaches of New York Problem – Currently, swim advisories or closings are issued by beach managers based on standards for concentrations of bacterial indicators such as Escherichia coli (E. coli). Standard culture methods for these bacteria take at least 18-24 hours before results are available. At most Great Lakes beaches, the beach is posted with an advisory or closing or is determined to be acceptable for swimming on the basis of the previous day’s E. coli concentration. Sanitary conditions may change overnight and even throughout the day (Boehm and others, 2002) making decisions made from previous days information incorrect. Because of this time-lag issue, water-resource managers are seeking solutions that provide near real-time... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Contaminants, Microbial, Contaminants, Microbial, Contaminants, Natural, Contaminants, Natural, Contaminants, Organic, All tags... Contaminants, Organic, Contaminants, microbial, Contaminants, natural, Contaminants, organic, Cooperative Water Program, Geospatial Applications, Geospatial Applications, Great Lakes, Human Health Activities Program, Information Visualization, Information Visualization, Information Visualization, Mapping Application Development, Mapping Application Development, Mapping Applications Development, Micropollutants, Micropollutants, Micropollutants, New York, Surface-Water Quality Monitoring, Surface-Water Quality Monitoring, Surface-Water-Quality Monitoring, USGS New York Water Science Center, WSC, Water Quality, Water Quality, e coli, Fewer tags Water-Surface Profiles and Discharges for Four Stream Reaches, Ithaca, Tompkins County N.Y. Background / Problem – The City of Ithaca, Tompkins County, N.Y., is in the process of developing a flood management plan for the streams that flow through the City. Flooding in the City is caused by a variety of distinct and sometimes interconnected reasons. Flooding often is a result of snowmelt and rain during the winter and spring. Slow ice-melt and breakup can lead to ice jams and subsequent flooding. Flash floods are produced by summer thunderstorms. All of these flood types are compounded by two factors: the storm-sewer system in the City and the elevation of Cayuga Lake. The storm sewers drain to the nearby streams at points below the tops of the streambanks. Because the streamward ends of the storm sewers... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Cascadilla Creek, Cayuga Inlet, Cooperative Water Program, Fall Creek, Flood Science, All tags... Flood Science, Flood Science, Floods and Droughts, Ithaca, New York, Sixmile Creek, Stream Hydraulics, Stream Hydraulics, Tompkins County, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, discharge, flood-management, flooding, hydraulic model, storm-sewer, streamflow, Fewer tags Assessment of Nutrient Loading to Jamaica Bay, Gateway National Recreation Area, New York Significant changes in nitrogen loads to Jamaica Bay have likely occurred with progressive improvements to Water Pollution Control Plants (WCWPs) that discharge into the Bay. Data available from the New York City Department of Environmental Protection and others will be used to determine loads from WPCPs, combined sewer overflows, and the atmosphere. Selected wells within the USGS water quality database, including those near the landfills that are immediately adjacent to Jamaica Bay, will be used to determine concentrations of nutrients in shallow ground water that enter the bay from ground water seepage. To facilitate evaluation of ground water loads, an existing USGS Finite element model that simulates sub... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal Science, Coastal Science, Completed, Cooperative Water Program, GW or SW, All tags... GW or SW, GW or SW, Gateway National Recreation Area, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, Jamaica Bay NY, NY, Nearshore Environmental Health, Nearshore Environmental Health, Nearshore Environmental Health, New York, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water Quality, Water quality, groundwater, wells, Fewer tags Detailed Aquifer Mapping in Eastern Broome and Southeastern Chenango Counties, New York Introduction Detailed mapping of stratified glacial deposits in eastern Broome and southeastern Chenango Counties, New York is a study in the cooperative Detailed Aquifer Mapping Program between the US Geological Survey (USGS) and the New York State Department of Environmental Conservation (NYSDEC). The aim of the program is to map glacial aquifers in New York State at a scale of 1:24,000. This information is used by NYSDEC Division of Water and others for delineation of groundwater contributing areas, assessing potential threats to aquifers from both point and non-point sources, responding to contamination from spills or leaks from underground storage facilities, and providing information to assess the need... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Cooperative Water Program, Eastern Broome County, Hydrogeologic Characterization, Hydrogeologic Characterization, All tags... NY, New York, Southeastern Chenango County, USGS New York Water Science Center, WSC, Water Use and Availability Science, aquifer mapping, glacial, Fewer tags Detailed Aquifer Mapping in Eastern Chemung County – The Chemung River Valley and Adjacent Tributary Valleys Background - Detailed mapping of the glacial aquifer within the Chemung River and adjacent tributary valleys in Eastern Chemung County is the latest study in the cooperative Detailed Aquifer Mapping Program between the US Geological Survey (USGS) and the New York State Department of Environmental Conservation (NYSDEC). The aim of the program is to map glacial aquifers in New York State at a scale of 1:24,000. This information is used by NYSDEC Division of Water and others for delineation of groundwater contributing areas, assessing potential threats to aquifers from both point and non-point sources, responding to contamination from spills or leaks from underground storage facilities, and providing information... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AquiferMapping, Chemung County, Completed, Cooperative Water Program, GW or SW, All tags... GW or SW, GW or SW, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, New York, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, aquifer mapping, glacial, Fewer tags Natural Methane Occurrence in Water Wells of South-Central New York State- Evaluation of Topographic Position and Hydrogeologic Setting INTRODUCTION Naturally occurring methane has been noted at some locations in the upper Devonian shale bedrock and in overlying glacial deposits in parts of Broome, Tioga, and Chemung Counties in south-central New York State (Williams, 2010). Systematic sampling of water wells for dissolved methane is needed to determine if the topographic and hydrogeologic setting of a well is related to methane occurrence. Objective and Study Area - The objective of this study is to characterize the natural occurrence of dissolved methane gas in groundwater from water wells within four different topographic and hydrogeologic settings (upland and major valley areas where bedrock is confined or unconfined by glacial deposits).... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Broome County, Chemung County, Completed, Contaminants, Natural, Contaminants, Natural, All tags... Contaminants, natural, Cooperative Water Program, Focused Assessments, Focused Assessments, Focused Assessments, Focused Assessments, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, Hydrofracking, Hydrofracking, Hydrofracking, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, New York, Tioga County, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water Quality, Water Quality, Water Use and Availability Science, Water Use and Availability Science, Water quality, methane, Fewer tags Didymosphenia geminata in the Upper Esopus Creek: Seasonal changes in density and distribution, controlling environmental factors, and potential ecosystem impacts Background The invasive diatom Didymosphenia geminata (didymo) has historically been a wide-spread, but rare, micro algae found in moderately flowing cold-water streams of North America, Europe, Asia, and (more recently) New Zealand. Demographic patterns of didymo have recently changed resulting in greater spatial coverage and temporal persistence (e.g. blooms) in streams worldwide. Didymo blooms can form dense “woven fabric” aggregate up to 20 cm think, that trap algae, macroinvertebrates, detritus and other debris. The recent discovery of didymo in parts of New York State, including the Upper Esopus Creek in 2009, is concerning because blooms can affect benthic habitat, river hydraulics, the structure and function... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Completed, Contaminants, HABS, Contaminants, HABS, Cooperative Water Program, Ecological Assessment of Human Impacts, All tags... Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecosystem Health, Ecosystem Health, Esopus Creek, Esopus Creek, New York, New York, USGS New York Water Science Center, WSC, didymo,ecosystems, Fewer tags Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers consisting of intensively sampled sites, gradient sites representing the range of land uses present in the basin, and regional stream-survey sites. Median nitrate and total phosphorous concentrations were 1.15 and 0.01 milligrams per liter (mg/L) for three sites on the mainstem Delaware River, 1.27 and 0.009 mg/L for the East Branch Delaware... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Biogeochemical and Hydrologic Assessment, Biogeochemical and Hydrologic Assessment, BiogeochemicalandHydrologicAssessment, Completed, Cooperative Water Program, All tags... Delaware River Basin, Delaware River Basin, Ecosystem Health, Ecosystem Health, Ecosystem Health, Ecosystem Health, Focused Assessments, Focused Assessments, Focused Assessments, New York, Pennsylvania, USGS New York Water Science Center, Upper Delaware Scenic and Recreational River, WSC, Water Quality, Water Quality, Fewer tags Human- and Ecological-Health Concerns Related to Transport and Persistence of Contaminants on Shinnecock Nation Tribal Lands Problem Tribal Lands of the Shinnecock Nation Tribal community were inundated during Hurricane Sandy’s storm tide, resulting in detrimental effects on the Tribal Land’s natural resources. The existing science being used to inform decisions on remediation is biased toward activities are necessarily focused on the immediate aftermath of storms An assessment of the sources of contaminants that may have been introduced from inundation is needed to provide a context with which the Tribal community can better understand how to prioritize and manage the sources and minimize risk. Objectives This project will evaluate key human- and ecological-health concerns related to transport and persistence of... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Climate Impacts, Climate Impacts, Climate impacts, Contaminants, Emerging, Contaminants, Emerging, All tags... Contaminants, Natural, Contaminants, Natural, Contaminants, emerging, Contaminants, natural, Cooperative Water Program, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecosystem Health, Ecosystem Health, Flood Inundation, Flood Inundation, Flood Inundation, GW or SW, GW or SW, GW or SW, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, New York, Sediment, Sediment, Sediment, Shinnecock Nation Tribal Lands, Long Island, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Fewer tags Hurricane Sandy -- Science to support coastal resilience Coastal Hydrology and Storm Surge Storm-surge is one of the most powerful and destructive elements of major storm events. Excessively high tides associated with storms can flood and inundate coastal areas, often moving sediment and altering coastal landscapes and drainages. USGS provides critical expertise in measuring storm surge and assessing conditions both before and after the storm. Through development of storm tide monitoring networks, data analysis, and data delivery, USGS provides vital information to help coastal communities prepare for and recover from storm surge events. View Fact Sheet Science Science Support for Tribes Tide gage/weather station installed in collaboration with Mashpee-Wampanoag Tribe.... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal Science, Coastal Science, Flood Inundation, Flood Inundation, Flood Inundation, All tags... Groundwater and Streamflow Information, Groundwater and Streamflow Information, Hurricane Sandy, Hydrologic Networks and Analysis, New York,New Jersey,Maryland,Delaware, Virginia,North Carolins, Surface-Water Monitoring, Surface-Water Monitoring, Surface-Water Monitoring, Surge, Wave, Tide Hydrodynamics, Tide and Wave Hydrodynamics, Tide and Wave Hydrodynamics, Tide and Wave Hydrodynamics, USGS New York Water Science Center, WSC, Fewer tags Water-Quality Assessments of Principal Aquifers Background A major focus of the NAWQA Program in its second decade (2002-2013) is on regional- and national-scale assessments of groundwater-quality status and trends in principal aquifers. The U.S. Geological Survey Office of Groundwater has identified 62 principal aquifers in the U.S. ( U.S. Geological Survey, 2003 ). About 1/3 of the Nation's principal aquifers are the focus of water-quality assessments at the regional scale by NAWQA. The NAWQA framework for principal aquifer assessments considers the physical setting of the aquifer, in addition to its susceptibility and vulnerability to contamination. More information (USGS Fact Sheet 2005-3013, PDF, Adobe reader is freely available to read a PDF) Publications... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Completed, Focused Assessments, Focused Assessments, Focused Assessments, Groundwater-Quality Monitoring, All tags... Groundwater-Quality Monitoring, Groundwater-Quality Monitoring, National Water Quality Assessment Program, New York, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water Quality, Water quality, aquifers, national, Fewer tags Estimating Loading Above and Below Agricultural Best Management Practices (BMPs) and Combined Animal Feeding Operations (CAFOs) in the Genesee River Watershed The current information available for the Genesee River and watershed is insufficient to assess if the Beneficial Use Impairment (BUI) delisting criteria for the Rochester Embayment Area of Concern (AOC) can or have been met. With on-going and future projects that are implementing best practices to control soil erosion and the reduction of nutrients that reach the Rochester Embayment, the river and the watershed, it becomes a necessity to: 1.) collect more frequent Total Suspended Sediment (TSS) data for the Genesee River both within and outside of the AOC; and 2.) to have a study design capable of evaluating the impact/success of the current and proposed GLRI projects in the watershed. This project is envisioned... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: BMP, Best-Management Practices, Best-Management Practices, Best-Management Practices, CAFO, All tags... Climate Change, Climate Change, Climate Impacts, Climate Impacts, Climate impacts, ClimateChange, Contaminants, Organic, Contaminants, Organic, Contaminants, organic, Cooperative Water Program, Ecosystem Health, Ecosystem Health, Genesee River Watershed, Groundwater and Streamflow Information, Groundwater and Streamflow Information, Land Use Effects, Land Use Effects, Land use effects, New York, Rochester AOC, Surface-Water Monitoring, Surface-Water Monitoring, Surface-Water Monitoring, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, Fewer tags Changes in Soil and Stream Water Chemistry in Response to Reduction in Acid Deposition in the Catskills Summary The Environmental Protection Agency’s (EPA) Long Term Monitoring (LTM) network has supported the collection of stream chemistry data in the Catskills since the 1990s. Trends in stream chemistry have periodically been evaluated in these streams but the most recent assessments only extend through the early 2000s. An updated assessment of stream chemistry trends will help evaluate the effects of recent substantial declines in acid deposition during the last decade. This study will evaluate changes in surface water chemistry from 1991 through 2013 at 5 stations in the Neversink and Rondout watersheds in the Catskill Mountains of New York. The results will be compared to changes in atmospheric deposition... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Biogeochemical and Hydrologic Assessment, Biogeochemical and Hydrologic Assessment, BiogeochemicalandHydrologicAssessment, Catskill Mountains, Completed, All tags... Cooperative Water Program, Ecosystem Health, Ecosystem Health, New York, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, acid rain, soil chemistry, surface water, Fewer tags Aquifer Appraisal at the Tunison Laboratory of Aquatic Science, Cortland, New York Problem - The Ithaca Subdistrict Office of the U.S. Geological Survey (USGS) is providing technical assistance to the USGS, Biological Resources Division (BRD), at the Tunison Laboratory of Aquatic Science (TLAS) in an investigation of the availability of fresh ground water. An expansion in the water supply at the laboratory is needed for a proposed spawning facility for salmon strains that are viable for natural fisheries in the Great Lakes region. The hydrogeology of the area is a complex of moraine and outwash deposits west of Cortland, N.Y. Data from existing wells at the laboratory indicate that well screens may readily clog from precipitated minerals. A review of the hydrogeology of the area, including... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Borehole Geophysics, Completed, Cortland County, Fisheries, GW or SW, All tags... GW or SW, GW or SW, Geophysics, Hydrogeologic Characterization, Hydrogeologic Characterization, NY, New York, Tunison Lab, USGS New York Water Science Center, WSC, Water Quality, aquifer, aquifer, borehole geophysics, borehole-geophysical logging, fish, fish, groundwater, moraine, water quality, water quality, wells, Fewer tags Delineation of Rock Fractures, Faults, and Groundwater Flow in the Vicinity of Proposed Water Tunnels, New York City and Southeastern New York Problem - The New York City Department of Environmental Protection (NYCDEP) is constructing or proposing water tunnels under New York City and areas of southeastern New York (Hudson River Basin). These tunnels can intersect faults and fractures that produce large amounts of ground water. For example, one tunnel excavation intersected fractures that produced over 200 gallons per minute of ground-water flow into the tunnel. Consequently, there is a need to determine the potential of intersecting ground-water producing fractures during tunnel excavation. The use of advanced borehole geophysical techniques by the USGS during tunnel excavations in northern Queens County demonstrated that geophysical techniques can... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Borehole Geophysics, Completed, Cooperative Water Program, GW or SW, GW or SW, All tags... GW or SW, Geophysics, Geophysics, Geophysics, Groundwater Monitoring, Groundwater Monitoring, Groundwater Monitoring, Groundwater and Streamflow Information, Groundwater and Streamflow Information, Groundwater-Flow Modeling, Groundwater-Flow Modeling, Groundwater-Flow Modeling, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, New York, New York City, USGS New York Water Science Center, WSC, Water Use and Availability Science, Water Use and Availability Science, borehole, groundwater, rock fractures, tunnels, Fewer tags Delineation of the Freshwater-Saltwater Interface at Selected Public-Supply Wells Using Advanced Surface and Borehole Geophysical Techniques, in Eastern Suffolk County, New York The combination of a complex hydrogeologic framework, narrow land masses surrounded by saltwater, and extensive ground-water public-supply pumpage has produced localized areas of elevated chloride concentrations in ground water. This project uses advanced surface and borehole geophysical methods to determine the extent of saltwater intrusion and road-salt plumes at selected sites in eastern Suffolk County, Long Island, NY. Two-dimensional resistivity sections have been integrated with borehole geophysical logs and water-quality data to produce cross-sections of road-salt plumes. Borehole geophysical logs are collected twice a year to determine variations in chloride concentration and thicknesses of intrusive... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Borehole Geophysics, Borehole Geophysics, Borehole Geophysics, Cooperative Water Program, GW or SW, All tags... GW or SW, GW or SW, Geophysics, Geophysics, Hydrogeologic Characterization, Hydrogeologic Characterization, Hydrogeologic Characterization, New York, Suffolk County, USGS New York Water Science Center, WSC, borehole, freshwater, geophysics, groundwater, saltwater, wells, Fewer tags 1 2 3 4 »